Dear Juan Pablo,
If "mymat" is your matrix, you could use something like this:

# Option 1
mymat[mymat$b>1,]

# Option 2
mymat[with(mymat,b>1),]


HTH,

Jorge


On Sun, Feb 22, 2009 at 1:10 PM, Juan Pablo Fededa <jpfededa@gmail.com>wrote:

> Hi all,
>
> I have the next matrix:
>
>
> a        b         c
>
> 1        2        23
> 2        3        42
> 3        0        54
> 4        5        23
> 5        0        22
> 6        7        21
> 7        1        20
> 8        9        19
>
> I want to filter the rows with the values of b higher than 1 in a way that
> leaves me the next matrix:
>
>
> a        b         c
>
> 1        2        23
> 2        3        42
> 4        5        23
> 6        7        21
> 8        9        19
>
>
> Thanks in advance,
>
>
> Juan
>
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>
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